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Safer air-conditioner refrigerant helps reverse rapid ozone-layer losses of past decadesIf the approaching summer has you calling for an air-conditioning repair, you'll have a personal experience with one of the world's most successful global environmental efforts.http://phys.org/news252724330.html
EarthWed, 04 Apr 2012 02:12:23 ESTnews252724330Science under fire from 'merchants of doubt': US historianScientists are facing an uphill battle to warn the public about pressing issues due to dissenters in their ranks who intentionally sow uncertainty, says a US historian.http://phys.org/news252245982.html
Other SciencesThu, 29 Mar 2012 13:19:52 ESTnews252245982Cheap natural gas makes inroads as US vehicle fuelNatural gas, whose price is at record lows thanks to a shale drilling boom, is gaining traction as an alternative energy in the United States, with automakers jumping on the bandwagon.http://phys.org/news252158708.html
TechnologyWed, 28 Mar 2012 13:05:15 ESTnews252158708Nobel scientist who warned of thinning ozone dies(AP) -- F. Sherwood Rowland, the Nobel prize-winning chemist who sounded the alarm on the thinning of the Earth's ozone layer and crusaded against the use of man-made chemicals that were harming earth's atmospheric blanket, has died. He was 84.http://phys.org/news250746994.html
EarthMon, 12 Mar 2012 04:56:50 ESTnews250746994Journal urges Ottawa to stop muzzling scientistsThe science journal Nature called on the Canadian government in an online editorial Friday to "set its scientists free" and allow them to speak about their research.http://phys.org/news249926460.html
Other SciencesFri, 02 Mar 2012 16:01:08 ESTnews249926460Ozone suite on Suomi NPP continues more than 30 years of ozone dataA new satellite instrument suite is now sending back detailed information about the health of the Earth's ozone layer, the shield that protects the world&#146;s population from harmful levels of the sun's ultraviolet radiation. http://phys.org/news249301760.html
EarthFri, 24 Feb 2012 10:29:39 ESTnews249301760Environment Canada cuts threaten science, international agreementsRecent cuts to the scientific workforce of Environment Canada, a government agency responsible for meteorological services and environmental research, threaten scientific research related to the ozone layer in the upper atmosphere and pollution in the lower atmosphere, according to environmental scientists in the U.S. These reductions in personnel and projected budget cuts also threaten existing international agreements.http://phys.org/news248353578.html
EarthMon, 13 Feb 2012 11:06:23 ESTnews248353578Low temperatures enhance ozone degradation above the ArcticExtraordinarily cold temperatures in the winter of 2010/2011 caused the most massive destruction of the ozone layer above the Arctic so far: The mechanisms leading to the first ozone hole above the North Pole were studied by scientists of the KIT Institute of Meteorology and Climate Research (IMK). According to these studies, further cooling of the ozone layer may enhance the influence of ozone-destroying substances, e.g. chlorofluorocarbons (CFC), such that repeated occurrence of an ozone hole above the Arctic has to be expected.http://phys.org/news246197253.html
EarthThu, 19 Jan 2012 12:08:00 ESTnews246197253Could Siberian volcanism have caused the Earth's largest extinction event?Around 250 million years ago, at the end of the Permian geologic period, there was a mass extinction so severe that it remains the most traumatic known species die-off in Earth's history. Although the cause of this event is a mystery, it has been speculated that the eruption of a large swath of volcanic rock in Russia called the Siberian Traps was a trigger for the extinction. New research from Carnegie's Linda Elkins-Tanton and her co-authors offers insight into how this volcanism could have contributed to drastic deterioration in the global environment of the period. Their work is published January 9 in Earth and Planetary Science Letters.http://phys.org/news245337733.html
EarthMon, 09 Jan 2012 13:22:32 ESTnews245337733How sustainable is nuclear power for the UK?The research into the sustainability of nuclear and other electricity options in the UK shows that nuclear power could make a significant contribution to reducing greenhouse gas emissions by 2035. However, that would require a huge expansion of nuclear, constituting 35% of the electricity mix by 2035, almost double the current contribution.http://phys.org/news242538939.html
TechnologyThu, 08 Dec 2011 04:10:01 ESTnews242538939Ozone depletion a bigger deal down underThe Earth's thinning ozone layer is synonymous with a singing and dancing seagull named Sid -- at least it is in New Zealand and Australia.http://phys.org/news238406427.html
EarthFri, 21 Oct 2011 09:00:35 ESTnews238406427Significant ozone hole remains over AntarcticaThe Antarctic ozone hole, which yawns wide every Southern Hemisphere spring, reached its annual peak on September 12, stretching 10.05 million square miles, the ninth largest on record. Above the South Pole, the ozone hole reached its deepest point of the season on October 9 when total ozone readings dropped to 102 Dobson units, tied for the 10th lowest in the 26-year record.http://phys.org/news238338421.html
EarthThu, 20 Oct 2011 14:07:15 ESTnews238338421Jury still out on whether the Arctic ozone hole is an exceptionLast winter, an unprecedented ozone hole appeared above the Arctic, five times the size of Germany. For ETH-Zurich professor Thomas Peter, the recently published study comes as no surprise. But it does raise many questions.http://phys.org/news237630942.html
EarthWed, 12 Oct 2011 09:36:05 ESTnews237630942Astrophysics and extinctions: News about planet-threatening eventsSpace is a violent place. If a star explodes or black holes collide anywhere in our part of the Milky Way, they'd give off colossal blasts of lethal gamma-rays, X-rays and cosmic rays and it's perfectly reasonable to expect Earth to be bathed in them. A new study of such events has yielded some new information about the potential effects of what are called "short-hard" interstellar radiation events.http://phys.org/news237199087.html
Astronomy & SpaceFri, 07 Oct 2011 09:38:22 ESTnews237199087Venus has an ozone layer too: probe finds(PhysOrg.com) -- ESA's Venus Express spacecraft has discovered an ozone layer high in the atmosphere of Venus. Comparing its properties with those of the equivalent layers on Earth and Mars will help astronomers refine their searches for life on other planets.http://phys.org/news237135449.html
Astronomy & SpaceThu, 06 Oct 2011 15:57:41 ESTnews237135449Study finds unprecedented Arctic ozone loss(PhysOrg.com) -- A NASA-led study has documented an unprecedented depletion of Earth's protective ozone layer above the Arctic last winter and spring caused by an unusually prolonged period of extremely low temperatures in the stratosphere.http://phys.org/news236781335.html
EarthSun, 02 Oct 2011 13:36:02 ESTnews236781335NASA bus-sized satellite to crash-land this weekWhat goes up must come down. But where?http://phys.org/news235801167.html
Astronomy & SpaceWed, 21 Sep 2011 05:19:42 ESTnews235801167US satellite may crash back to Earth Sept 23: NASAA 20-year-old satellite that measured the ozone layer is expected to crash back to Earth late next week, but NASA said it still does not know where it will fall.http://phys.org/news235449758.html
Astronomy & SpaceSat, 17 Sep 2011 03:42:54 ESTnews235449758Whither the ozone hole?To mark the annual International Day for the Preservation of the Ozone Layer (Ozone Day), Dr Neil Harris, an expert on the atmospheric composition from the University&#146;s Department of Chemistry, discusses why research into this issue is as important as ever.http://phys.org/news235382473.html
EarthFri, 16 Sep 2011 09:01:50 ESTnews235382473Enfants terribles of the environment hit middle ageWe sort our rubbish. We recycle our rainwater. We worry about depleted oceans, ravaged rainforests, threatened species.http://phys.org/news235191720.html
EarthWed, 14 Sep 2011 04:30:01 ESTnews235191720How the N2O greenhouse gas is decomposedNitrous oxide (N2O) is a harmful climate gas. Its effect as a greenhouse gas is 300 times stronger than that of carbon dioxide. Nitrous oxide destroys the ozone layer. In industrial agriculture, it is generated on excessively fertilized fields when microorganisms decompose nitrate fertilizers. Decomposition of nitrous oxide frequently is incomplete and strongly depends on environmental conditions. Researchers from Freiburg, Constance, and KIT have now identified the structure of the enzyme that decomposes nitrous oxide and the decomposition mechanism. Their results are published in the Nature journal.http://phys.org/news233226187.html
EarthMon, 22 Aug 2011 10:03:17 ESTnews233226187New scientific research reveals diamonds aren't forever(PhysOrg.com) -- In a paper published in the US journal Optical Materials Express this week, Macquarie University researchers show that even the earth's hardest naturally occurring material, the diamond, is not forever.http://phys.org/news230230337.html
PhysicsMon, 18 Jul 2011 17:52:36 ESTnews230230337Climate change increases the risk of ozone damage to plantsGround-level ozone is an air pollutant that harms humans and plants. Both climate and weather play a major role in ozone damage to plants. Researchers at the University of Gothenburg, Sweden, have now shown that climate change has the potential to significantly increase the risk of ozone damage to plants in northern and central Europe by the end of this century.http://phys.org/news228655821.html
EarthThu, 30 Jun 2011 12:30:34 ESTnews228655821New website to monitor greenhouse gasesAn Australian research institute on Monday launched a website that allows the public to monitor greenhouse gas emissions in the southern hemisphere.http://phys.org/news227762712.html
EarthMon, 20 Jun 2011 04:25:29 ESTnews227762712Extreme makeover: are humans reshaping Earth?If alien geologists were to visit our planet 10 million years from now, would they discern a distinct human fingerprint in Earth's accumulating layers of rock and sediment?http://phys.org/news224676643.html
EarthSun, 15 May 2011 11:11:53 ESTnews224676643New study links ozone hole to climate change all the way to the equatorIn a study to be published in the April 21st issue of Science magazine, researchers at Columbia University's School of Engineering and Applied Science report their findings that the ozone hole, which is located over the South Pole, has affected the entire circulation of the Southern Hemisphere all the way to the equator. While previous work has shown that the ozone hole is changing the atmospheric flow in the high latitudes, the Columbia Engineering paper, "Impact of Polar Ozone Depletion on Subtropical Precipitation," demonstrates that the ozone hole is able to influence the tropical circulation and increase rainfall at low latitudes in the Southern Hemisphere. This is the first time that ozone depletion, an upper atmospheric phenomenon confined to the polar regions, has been linked to climate change from the Pole to the equator.http://phys.org/news222613588.html
EarthThu, 21 Apr 2011 14:06:45 ESTnews222613588Ozone layer faces record 40 pct loss over Arctic(AP) -- The protective ozone layer in the Arctic that keeps out the sun's most damaging rays - ultraviolet radiation - has thinned about 40 percent this winter, a record drop, the U.N. weather agency said Tuesday.http://phys.org/news221215463.html
EarthTue, 05 Apr 2011 09:44:37 ESTnews221215463Mutant microbes test radiation resistanceEarly Earth lacked an ozone layer to act as a shield against high-energy solar radiation, but microbes flourished by adapting to or finding other forms of protection from the higher ultraviolet radiation levels. Now researchers have begun testing modern microbes to see if they could act as pioneers in the harsh conditions of extraterrestrial space and other planetary environments.http://phys.org/news220190661.html
Astronomy & SpaceThu, 24 Mar 2011 13:50:01 ESTnews220190661Arctic on the verge of record ozone lossUnusually low temperatures in the Arctic ozone layer have recently initiated massive ozone depletion. The Arctic appears to be heading for a record loss of this trace gas that protects the Earth's surface against ultraviolet radiation from the sun. This result has been found by measurements carried out by an international network of over 30 ozone sounding stations spread all over the Arctic and Subarctic and coordinated by the Potsdam Research Unit of the Alfred Wegener Institute for Polar and Marine Research in the Helmholtz Association (AWI) in Germany.http://phys.org/news219318258.html
EarthMon, 14 Mar 2011 10:44:30 ESTnews219318258Study: Ozone layer's future linked strongly to changes in climateThe ozone layer -- the thin atmospheric band high-up in the stratosphere that protects living things on Earth from the sun&#146;s harmful ultraviolet rays, not to be confused with damaging ozone pollution close to the ground -- faces potential new challenges even as it continues its recovery from earlier damage, according to a recently released international science assessment. The report, prepared by the Scientific Assessment Panel of the U.N. Montreal Protocol on Substances that Deplete the Ozone Layer, also presents stronger evidence that links changes in stratospheric ozone and the Earth&#146;s climate.http://phys.org/news217160332.html
EarthThu, 17 Feb 2011 10:19:03 ESTnews217160332